1211591-25-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211591-25-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,1,5,9 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1211591-25:
(9*1)+(8*2)+(7*1)+(6*1)+(5*5)+(4*9)+(3*1)+(2*2)+(1*5)=111
111 % 10 = 1
So 1211591-25-1 is a valid CAS Registry Number.